Shimano GRX BR-RX400 Flat Mount Hydraulic Disc Brake

Seamless Braking for Gravel Adventures

Rough Terrain Confidence
Efficient Heat Dissipation
Flat Mount Design

₹4,540

Earn 90 points paying online Details

Type

Front Rear

Not sure it fits your bike? Ask TBA Guide WhatsApp us

Check delivery estimate

The Shimano GRX BR-RX400 hydraulic disc brake features a sleek, low-profile Flat Mount design that integrates seamlessly with modern gravel and mixed-terrain bikes. Its compact build enhances bike aesthetics while maintaining exceptional braking performance.

Greater Control on Mixed Terrain: Engineered specifically for gravel and adventure cycling, the BR-RX400 provides consistent and reliable stopping power across a variety of surfaces. Its precise modulation ensures better control when tackling challenging descents or uneven trails.

Advanced Heat Dissipation: With Ice Technologies, the brake caliper is designed to dissipate heat efficiently during prolonged braking, ensuring consistent performance even on long and steep descents. This feature enhances safety and confidence for riders on demanding routes.

Simple Maintenance with One-Way Bleeding: The One-Way Bleeding system simplifies brake maintenance, making it easier for riders to manage their braking system. This straightforward process reduces air bubbles in the system for consistent and responsive braking.

Built to handle the rigors of gravel riding, the GRX BR-RX400 disc brake inspires confidence, allowing riders to explore rougher terrains without hesitation.

Specifications

Model No	Front: BR-RX400-F, Rear: BR-RX400-R
Series	GRX
Color	Series Color
Brake Type	Hydraulic Disc Brake
Brake Hose (Kit)	SM-BH90-JK-SSR, SM-BH90-J-SSR
Hose Joint	Straight
Brake Hose Color (Kit)	Black
J-Kit Spec (for OEM)	Yes
Ice Technologies Pad Compatible Caliper	Yes
Pad\|Standard 1	K05S-RX Resin (w/o fin)
Pad\|Standard 2	L05A-RF Resin (w/ fin)
Pad\|Option 1	K04S-MX Metal (w/o fin)

Pad\|Option 2	L04C-MF Metal (w/ fin)
Fixing Screw Spec for Rear Mount	10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm
Recommended Brake Lever	ST-RX400
Recommended Disc Brake Rotor	SM-RT64
Oil	Shimano Mineral
One Way Bleeding	Yes
Mount Type	Flat Mount
Piston	2
Caliper Fixing Screw\|Tool Size	4 mm
Caliper Fixing Screw\|Anti-Loosen Method	Screw Fix Pin + Snap Ring
Pad Mount	Pad Axle
Remarks	Front Spec with Adaptor

Features

Rough Terrain Confidence: Designed for tackling rough surfaces with consistent and reliable braking power.
Efficient Heat Dissipation: Ensures excellent braking performance by minimizing heat buildup during prolonged use.
Flat Mount Design: Sleek, compact, and easy to install for a clean and aerodynamic setup.
User-Friendly Maintenance: Simplifies setup, tool access, and hose joint connection with the J-kit system.
Convenient Wheel Replacement: Designed for straightforward wheel changes with minimal effort.
Clean Bleeding System: Easy and clean hydraulic bleeding process for quick and hassle-free maintenance.

Technologies

Ice Technologies: Reduces heat buildup with advanced rotors and pads, ensuring consistent braking, quieter rides, and extended pad life by dissipating heat efficiently.
One Way Bleeding: Streamlined oil routing prevents air bubbles for quick and clean hydraulic system maintenance using a funnel tool with mineral oil.

What's in the box

1x Shimano GRX BR-RX400 Brake Caliper (Front or Rear Wheel)
1x Brake Pad L03A Resin with Fin
1x Fixing Bolt for Rear Mount 25mm

Warranty and support

Covered by the manufacturer's warranty. Warranty claims go through us and we deal with the brand for you.

Shimano warranty terms

Questions after delivery? Ask TBA Guide or WhatsApp us.

Shipping and returns

We ship across India. Shipping is free on orders above ₹2,000 and ₹99 below that. Cash on delivery is available on orders up to ₹20,000, with a COD charge that depends on the order value. For a delivery estimate, enter your pincode in the box above the add-to-cart button: it shows the courier's own estimate for your address, not a promised date. If a parcel is held up we chase the courier until it is delivered. Full shipping policy

Most Shimano products take a little longer to ship.

Returns can be started within 7 days of delivery on unused items in their original condition with all tags and packaging. Apparel, helmets, gloves and similar items are returnable; wetsuits and products discounted by more than 5% are not. Compatibility questions are not grounds for a return unless our listing was wrong, so ask us before you order if you are unsure. Return shipping is arranged by you; on an accepted return you can choose an exchange, store credit or a refund after shipping and transaction charges. Orders can be cancelled only until they are processed. Full return and refund policy